Final Exam Review 19-20

What do you know about a neutral atom's protons and electrons?

• They are the same

• They can be added together to determine the mass number

• They are different

• They can be determined by looking at the atomic mass

If a neutral atom has 6 electrons and 8 neutrons, what is it's identity?

• Silicon

• Carbon

• Oxygen

• Helium

Which of the following accurately describes the Law of Conservation of Matter?

• The total mass of the products will be less than the total mass of the reactants

• The total mass of the reactants will be less than the total mass of the products

• The total mass of the reactants will be the same as the total mass of the products

• The mass of the products and reactants are unrelated since they are different compounds

Use the solubility curve attached to help you answer the following question:

If I dissolved 10 g of KClO₃ in 100 mL of water at 30^oC, how would I define the solution?

• Supersaturated

• Unsaturated

• Saturated

What particle determines the identity of the element?

• Proton

• Neutron

• Electron

• Quark

What subatomic particles must be gained or lost in order for an atom to form an ion?

• Proton

• Neutron

• Electron

• Prion

What elements can be found to the left of the metalloid staircase and are typically form cations (+ charge)?

• Metals

• Nonmetals

• Metalloids

• Noble Gases

What makes all elements except the noble gases unstable?

• They have a full valence shell

• They have larger nuclei

• They do not have a full valence shell

• They are all metals

Which element would you expect to have properties most similar to sodium (Na)?

• Potassium

• Magnesium

• Neon

• Chlorine

Which of the following differences between ionic and covalent compounds is a correct statement?

• Ionic bonds form between two nonmetals and covalent bonds result from metals and nonmetals bonding

• Covalent compounds can only exist as gases

• Ionic and metallic bonds are the same thing

• Ionic bonds transfer electrons and covalent bonds share them